Apower plant produces electrical power by running water through a turbine. the plant produces 33 kw by utilizing a stream of water that drops 40 m from a reservoir to the turbine and flows at a rate of 150 kg/s. what is the efficiency of the turbine‐generator?

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?